Article

OBJECTIVE: To determine the foot pressure pattern of individuals with medial knee
osteoarthritis (OA) and to analyze its relation with knee flexion/extension range
of motion. DESIGN: Descriptive. SETTING: Rehabilitation center. PARTICIPANTS:
Individuals with unilateral, painful medial knee OA (n=50; mean age, 75y; OA
group) were enrolled as subjects, and young, healthy persons (n=50; mean age,
28y; young group) and elderly persons (n=44; mean age, 74y; elderly group)
without any pain, deformity, or apparent OA changes in either knee were enrolled
as controls. INTERVENTION: Walking 10m at a comfortable speed. MAIN OUTCOME
MEASURES: Partial foot pressures as percentages of body weight (%PFP),
anteroposterior length of the center of pressure (COP) path as a percentage of
foot length (%Long), transverse width of the COP path as a percentage of foot
width (%Trans), knee flexion/extension range of motion (in the OA group).
RESULTS: The %PFP values for the heel and hallux, %Long, and %Trans were all
significantly lower in the OA group than in controls (P<.001, all). Within the OA
group, a limited range of knee extension was significantly associated with a
short %Long (P<.001) but not with %Trans. CONCLUSIONS: Individuals with medial
knee OA exhibited low pressure on the heel and hallux and short %Long of the COP
path, and limitation of knee extension was associated with shortness of %Long.
The shortness of %Long in the OA group likely resulted from insufficient knee
extension during the heel-contact phase associated with low pressure on the heel.
%Long is a useful parameter in gait analysis by using a foot pressure measurement
system.
CI - Copyright (c) 2013 American Congress of Rehabilitation Medicine. Published by
Elsevier Inc. All rights reserved.

Langue : ANGLAIS